engine not hitting on all
Thread Starter
Heel & Toe
Joined: Jan 2013
Posts: 23
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engine not hitting on all
I got my 1968 in oct,12 and has had a miss when I got it. I have changed plugs twice replaced wires ,dist cap & rotor. Still there.I went to Pertronix lobe sensor ele ign.Still there.called edelbrock and put on an 2101 intake and 1406 carb.Still there.Compression test has all over 100.Did a leakdown test and is good.Adjusted valves.Still there. Can take 3 plug wires off and no difference in running.One on one side and 2 off other side.Where to go??? I have swaped out the good one with where the bad is and still the same ones not hitting. Swaped the plugs then the wires one at a time. The same cylinders not hitting but getting fire. ??????
Drifting
Joined: Dec 2004
Posts: 1,714
Likes: 42
From: Austin Texas
do you have your old distributor still ? What if you swap that in with the good plugs and wires and carb? Does it Pop and backfire?
I just went through this myself and it is very frustrating. I sorted it out but wife said she thought I was gonna have a meltdown. I had both fuel and ignition issues. Once I sorted the ignition out, I used an A/F gauge to tune the carb.
This may be a good excuse to pick up a wideband if you were wanting one anyway.
I just went through this myself and it is very frustrating. I sorted it out but wife said she thought I was gonna have a meltdown. I had both fuel and ignition issues. Once I sorted the ignition out, I used an A/F gauge to tune the carb.
This may be a good excuse to pick up a wideband if you were wanting one anyway.
Last edited by johnt365; Feb 10, 2013 at 02:47 PM.
Safety Car
Joined: Jan 2009
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From: anchorage ak
That's odd. What was the compression on those three cylinders? It takes fuel/air, spark to fire. If you put a plug in those three spark plug wires and ground the plug do each one at a time to see If there firering. What do the plugs look like on those three cylinders versus the other cylinders? What kind of vacuum is it pulling and is the gauge steady or does the needle move?
Thread Starter
Heel & Toe
Joined: Jan 2013
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Yes I still have the old tach drive dist.Compression good on cylinders not hitting. I am retired old school and some of this is new to me.I have never pulled vaccum check?? I put a plug that I replaced with on plug wire and layed it on frame and started it so i know it is getting fire.I also am having a meltdown over this, never had such a hard time over something most likely simple.
Last edited by nightynine; Feb 10, 2013 at 03:31 PM.
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From: anchorage ak
Calm down. Youll get this. What was the compression on each cylinder? For vaccum youll need a vaccum guage, sells for 30 to 40 dollars at schucks. What do the plugs look like in the cylinders that are missing. Do you have the firering order right? As die hard is asking, do the valves open, you can checkthis by removing a valve cover and watching the rocker arm open and close the valve. I find that when something like this is happening its a good thing to write down everything you check and the results.
Thread Starter
Heel & Toe
Joined: Jan 2013
Posts: 23
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bluedawg
Calm down. Youll get this. What was the compression on each cylinder? For vaccum youll need a vaccum guage, sells for 30 to 40 dollars at schucks. What do the plugs look like in the cylinders that are missing. Do you have the firering order right? As die hard is asking, do the valves open, you can checkthis by removing a valve cover and watching the rocker arm open and close the valve. I find that when something like this is happening its a good thing to write down everything you check and the results.
Last edited by nightynine; Feb 11, 2013 at 07:53 AM.
Safety Car
Joined: Jan 2009
Posts: 4,000
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From: New York
I googled your dist , it appears like a good one however some have had issues with its lobe sensor , and all else being equal it can only be distributor related , could even be a very weak coil , so go and check all dist connections and call the tech support for that distributor.
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Thread Starter
Heel & Toe
Joined: Jan 2013
Posts: 23
Likes: 0
I googled your dist , it appears like a good one however some have had issues with its lobe sensor , and all else being equal it can only be distributor related , could even be a very weak coil , so go and check all dist connections and call the tech support for that distributor.